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240 volt

  1. General Electrical Discussion
    So I'm doing a side job and the coustmer had asked me to replace old rusty panels n breakers for new shiney ones!! So here is my main question. With a 240v corner grounded delta (b phase) so I need a special panel and breakers specifically for grounded deltas .. or will the normal 240v 3 phase...
  2. General Electrical Discussion
    I just wired a 240 heater using 2 existing 120v circuits. One of the circuits has a GFCI outlet, the other has a normal outlet. The heater is wired downstream of both outlets using the hot wire from each. I measure 240 at the heater. When the heater comes on, it pops the GFCI. Can someone...
  3. General Electrical Discussion
    Our equipment requires 3-phase, 400 Hz, 120V. Our facility provides 3-phase, 400 Hz, 240V. What do we need to do? Do we need some type of power power converter? (Please excuse dumb question) Thanks - Olive
  4. General Electrical Discussion
    I have worked on machinery from Europe that has 2-wire grounded 240V in the panel. This is just like the 2-wire grounded 120V we use in the U.S. In other words, you have 2 wires coming off the secondary side of a single phase transformer at a potential of 240 V. One leg is grounded, giving you a...
  5. General Electrical Discussion
    I don't understand how 240 volt baseboard heat works, this also applies to electric floor heat - If I'm connecting one phase to the black wire and the other phase to the red wire in a baseboard heater (and the black and red wires are capped together at the other end of the heater) how is this...
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